The Census Bureau collects data on fertility in several of its surveys. To learn more, go to the About Fertility Web page.
Social and Economic Characteristics of Currently Unmarried Women With a Recent Birth: 2011
Relationship Status at First Birth for Women Age 15–50 in the United States
Maternity Leave and Employment Patterns of First-Time Mothers: 1961-2008
Fertility of American Women Current Population Survey - June 2010